Breech-loading firearm.



Witnesses. lnvenlor.

W. O. BARNES.

BREEGH LOADING FIREARM.

APPLIGATION FILED AUG. 24, 1914.

1,1 31,984. Patented Mar. 16, 1915.

William O. Barnes.

THE NORRIS PETERS 60., PHOTG LITHOV, WASHING roN D. C,

WILLIAM 0. BARNES, OF LEOMINSTER, MASSACHUSETTS, ASSIGNOR TO MARY E.

JOHNSON, TRUSTEE, 0F FITCHBURG,

MASSACHUSETTS.

BREECH-LOADING- FIREARM.

Specification of Letters Patent.

Patented Mar. 16, 1915.

To all whom it may concern Be it known that I, WILLIAM O. BARNES, a citizen of the United States, residing at Leominster, county of Worcester, State of Massachusetts, have invented an Improvement in BreechLoading Firearms, of which the following description, in connect on with the accompanying drawing, is a spec1fication, like characters on the drawing representing like parts.

This invention relates to breech loading firearms and is particularly concerned with the firing mechanism and is particularly applicable to shot guns.

One object of the invention 1s to provide a hammer releasing mechanism of such a character that the hammer is readily released by a slight movement of, and a slight pressure upon, the trigger, and in which the sear engages the hammer in a peculiar manner to secure efficiency of operation under these conditions.

Another object of the invention is to provide for the mounting of the sear mechanism and trigger mechanism both upon the trigger plate so that these mechanisms may be readily assembled and may, together w1th the trigger plate, be inserted and removed for repair or readjustment.

Another object of the invention resides in a construction of sear and trigger mechanism for a double barrel firearm which presents a simple, strong and efficient construction.

The nature and objects of the invention will appear more fully from the accompanying description and drawings and will be particularly pointed out in the claims.

The drawings represent the breech block and connected parts of a double barrel shot gun embodying a preferred form of the in vention.

view of a small portion of the construction shown in Fig. 1 to show the connection between the breech block and trigger plate.

While the invention is not restricted to a particular kind of firearm it is particularly adaptable to breech loading shot guns and is shown herein embodied in a construction for a double barrel breech loading shot gun.

The main parts of the mechanism with the exception of those particularly involving the invention are all well known and familiar and need not be described in detail.

The breech block 1 is of the usual construction and is provided with the tang or top plate 2 extending rearwardly therefrom, while at the bottom the trigger plate 3 is in terlocked therewith and secured thereto by the set screw 4 in a familiar manner. The trigger plate and the tang are connected together by screw studs 5 and 6 and the whole mechanism when assembled is inserted in the gun stock and secured thereto in the usual way.

The hammer 7 is pivoted at 8 in the breech block and is thrown forwardly to firing position by the usual helical spring 9, into engagement with the firing pin 10. The hammer is provided at the top, with a lateral projection 11, forming a shoulder 12, and this shoulder is, by reason of its position, located at a very considerable distance from the pivotal axis of the hammer. In the double barrel construction illustrated, the hammers are duplicates excepting that the projections 11 are both on the inside, facing each other.

The trigger plate is provided with an upwardly projecting bearing block 13 and on this bearing block are pivotally mounted the sears and the triggers for operating the hammers. In the double barrel form of construction shown, this mounting is so arranged as to secure a very compact, strong, and simple form of construction. A bearing pin 14 extends through the forward end of the bearing block and on this bearing pin, at each side of the bearing block is mounted a scar 15. Each sear has a forward arm 16 extending forwardly beneath the projection 11 and is provided with a hook 17 to engage the shoulder 12 on the hammer and hold it back in firing position.

The bearing block 13 is provided at the rear with a pair of vertical slots 18. A bearing pin 19 extends through the rear of the bearing block and on this bearing pin are pivoted, one in each slot 18, the triggers 20. Each sear at its rear end is bent inwardly at 21 to overlie the rear of the corresponding trigger. When now, the hammer 7 is thrown backward by the cooking rod 22 against the action of e spring 9, its s u der 12 snaps over and engages the hook 17 of the corre-v sponding er, the sear ing th wn 11P- wardly to effect this engagement by a small spring 23 seated therein and engaging the trigger plate. With the parts ,thus in firin position it Will be seen that a" very slight pressure on the trigger will raise. the rear end 21 or" the sear, throwing the hook 17 out of engagement with the shoulder 12 and thus releasing the hammer. The engagement of the sear and hammer is effected at a very considerable distance from the pivotal axis of the hammer so that the leverage is very considerable] Thus the hammer is readily retained in firing position by the sear but is readily released by aslight movement of the sear." The action of the trigger is therefore quick, and readily caused by a slight pressure, making the firearm quick and accurate. i

"The construction disclosed for the mountingof the two sears two triggers in the bearing block presents a very simple, conipact, and strong construction in a double barrel firearm. The mounting of the sears and triggers-on the triggerplate enables these parts to be readily assembled, in proper. relative position and when assembled on the tri'gger' plate, readily to' t ainees-ed in positionon the breech block and readily to be removed therefrom for repair or re' placement, Ifla ling 'full-y described my invention, what I' claim as new, and desire to obtain by Letters Patent, isi '1. In a double'barrel breech loading firearm, the combination of a breech block, a

Qopie n otthispatentmayabe obtainedfor fivecents each, by addressing waghingt on, 1)- 09" triggerplate removably connected to the breech block, and provided with an upma l PFQi -Q iI bear n hl cls the said bearing 101 9. hav ng Ft of vertical slots in the rear thereof, a bearing pin in the forward .of said bearing block, a pair of sears mounted on said bearing pin, one at each side of said block, a second bearing pin in the rear of said block, a pair oftrigg'ers V mounted on said bearing pin, one in each of said slots. V

2. In a double barrel breech loading firearm, the combinationlof a breech block, a

trigger plate removably connected to the breech block, a pair of spring-pressed hammers pivoted on the breech block and each provided with projections, near, the top extending inwardly therefrom to form adjacent shoulders, "a bearing block projecting upwardly from the trigger plate. provided with a pair of vertical slots'in its rear, a pair of sear pivoted, one at each side on said bearing block and having their forward arms extending between the hammers and respectively beneath the corresponding shoulders on saidhammers, each sear being the cq mm issipner v of; Batepta, 

